Pass RenderStyle / RenderObject by reference in more places

Source/core/rendering/RenderObject.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  *           (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 1358 matching lines @@
 {
     if (!has3DRendering)
         matrix.makeAffine();
 }
 
 inline int adjustForAbsoluteZoom(int value, RenderObject* renderer)
 {
     return adjustForAbsoluteZoom(value, renderer->style());
 }
 
-inline LayoutUnit adjustLayoutUnitForAbsoluteZoom(LayoutUnit value, RenderObject* renderer)
+inline LayoutUnit adjustLayoutUnitForAbsoluteZoom(LayoutUnit value, RenderObject& renderer)
 {
-    return adjustLayoutUnitForAbsoluteZoom(value, renderer->style());
+    ASSERT(renderer.style());
+    return adjustLayoutUnitForAbsoluteZoom(value, *renderer.style());
 }
 
-inline void adjustFloatQuadForAbsoluteZoom(FloatQuad& quad, RenderObject* renderer)
+inline void adjustFloatQuadForAbsoluteZoom(FloatQuad& quad, RenderObject& renderer)
 {
-    float zoom = renderer->style()->effectiveZoom();
+    float zoom = renderer.style()->effectiveZoom();
     if (zoom != 1)
         quad.scale(1 / zoom, 1 / zoom);
 }
 
-inline void adjustFloatRectForAbsoluteZoom(FloatRect& rect, RenderObject* renderer)
+inline void adjustFloatRectForAbsoluteZoom(FloatRect& rect, RenderObject& renderer)
 {
-    float zoom = renderer->style()->effectiveZoom();
+    float zoom = renderer.style()->effectiveZoom();
     if (zoom != 1)
         rect.scale(1 / zoom, 1 / zoom);
 }
 
 #define DEFINE_RENDER_OBJECT_TYPE_CASTS(thisType, predicate) \
     DEFINE_TYPE_CASTS(thisType, RenderObject, object, object->predicate, object.predicate)
 
 } // namespace WebCore
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showTree(const WebCore::RenderObject*);
 void showLineTree(const WebCore::RenderObject*);
 void showRenderTree(const WebCore::RenderObject* object1);
 // We don't make object2 an optional parameter so that showRenderTree
 // can be called from gdb easily.
 void showRenderTree(const WebCore::RenderObject* object1, const WebCore::RenderObject* object2);
 
 #endif
 
 #endif // RenderObject_h